Answer:
B.
Explanation:
electrons can be lost by one particle, and gained by another particle
Answer:
5 g/cm^3
Explanation:√3V=1.91293cm
Out of the five major mass extinction, one is Cretaceous-Tertiary extinction (K-T extinction). It happened 66 million years ago marked by the end of the Cretinous period.
Answer: obey the "law of conservation of mass".
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